266996736 has 264 divisors, whose sum is σ = 849423120. Its totient is φ = 83607552.

The previous prime is 266996731. The next prime is 266996749. The reversal of 266996736 is 637699662.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (266996731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7216110 + ... + 7216146.

Almost surely, 2^266996736 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266996736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (424711560).

266996736 is an abundant number, since it is smaller than the sum of its proper divisors (582426384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266996736 is an equidigital number, since it uses as much as digits as its factorization.

266996736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101 (or 71 counting only the distinct ones).

The product of its digits is 4408992, while the sum is 54.

The square root of 266996736 is about 16340.0347612849. The cubic root of 266996736 is about 643.9250456082.

The spelling of 266996736 in words is "two hundred sixty-six million, nine hundred ninety-six thousand, seven hundred thirty-six".